class Person:
    def __init__(self, first_name, last_name, age):
        self.first_name = first_name
        self.last_name = last_name
        self.age = age
    
    def __str__(self):
        return f'Person({self.first_name},{self.last_name},{self.age})'
    
print(Person('John', 'Doe', 30))